Granted Patent
Utility
US 6,648,237 · App. 10/054,074
Toy vehicle track segment and method of manufacturing a toy vehicle track segment
Inventors:
Richard Rothkopf, Donald E. Toht, K. Dale Weathington, Lin Ming Chuan Cindy
Patented Case
View Patent ↗
Granted: Nov 18, 2003
Filed: Nov 13, 2001
Inventors
Richard Rothkopf
Donald E. Toht
K. Dale Weathington
Lin Ming Chuan Cindy
Assignee (at issue)
Learning Curve International Inc.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.